bubble/attiny24a_memory-led-game
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refactor: set ctc mode on timer

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Sergey Yarkov 2021-10-24 23:57:44 +03:00
parent 755e720961
commit 35beeb8709
2 changed files with 66 additions and 43 deletions
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61
firmware.asm
View File

@ -58,6 +58,12 @@
.equ SW_FLAG_3 = 0xb0
.equ SW_FLAG_4 = 0x70
; Value that stored in OCR0A for each tone
; 880Hz = 71
; 785Hz = 80
; 590Hz = 105
; 440Hz = 142
.include "macros.asm" ; Include macros
.dseg ; Data segment
@ -123,18 +129,24 @@ loop: ; Program loop
cpi mcu_state_r, INIT_STATE
brne showing
rcall MCU_Init
set_state SHOWING_STATE
set_state SHOWING_STATE
showing: ; Showing state
cpi mcu_state_r, SHOWING_STATE
brne polling
rcall show_sequence
; set_state POLLING_STATE
polling: ; Polling state
cpi mcu_state_r, POLLING_STATE
brne completion
lds r18, SW_FLAGS_ADDRESS
led_1:
cpi r18, SW_FLAG_1
brne led_off_1
led_on_1:
sbi LED_PORT, 0
outi OCR0A, 8
sbi BUZZ_DIR, BUZZ_PIN
outi OCR0A, 142
rjmp led_2
led_off_1:
cbi LED_PORT, 0
@ -143,7 +155,8 @@ loop: ; Program loop
brne led_off_2
led_on_2:
sbi LED_PORT, 1
outi OCR0A, 10
sbi BUZZ_DIR, BUZZ_PIN
outi OCR0A, 71
rjmp led_3
led_off_2:
cbi LED_PORT, 1
@ -152,7 +165,8 @@ loop: ; Program loop
brne led_off_3
led_on_3:
sbi LED_PORT, 2
outi OCR0A, 12
sbi BUZZ_DIR, BUZZ_PIN
outi OCR0A, 105
rjmp led_4
led_off_3:
cbi LED_PORT, 2
@ -161,19 +175,21 @@ loop: ; Program loop
brne led_off_4
led_on_4:
sbi LED_PORT, 3
outi OCR0A, 15
sbi BUZZ_DIR, BUZZ_PIN
outi OCR0A, 80
rjmp polling
led_off_4:
cbi LED_PORT, 3
polling: ; Polling state
cpi mcu_state_r, POLLING_STATE
brne completion
completion:
cpi mcu_state_r, COMPLETION_STATE ; Completion state
brne default
default: ; Do nothing
rjmp loop
show_sequence: ; Show sequence of led
nop
ret
effect_1: ; Shift bits of an leds in port every 50ms
push r17
push r18
@ -221,6 +237,7 @@ ret
MCU_Init:
rcall init_ports
rcall init_interrupts
rcall init_buzzer
rcall delay_before_start ; Init MCU and delay before start main program
ret
@ -245,22 +262,26 @@ init_interrupts:
ldi temp_r, (1<<PCINT4) | (1<<PCINT5)| (1<<PCINT6) | (1<<PCINT7)
out PCMSK0, temp_r
;
; Setup timer
ldi temp_r, (1<<WGM01) | (1<<COM0A0) ; CTC Mode
out TCCR0A, temp_r
ldi temp_r, 4
out OCR0A, temp_r
ldi temp_r, (1<<CS00) | (1<<CS01) ; Prescale
out TCCR0B, temp_r
clr temp_r
sei ; Enable Global Interrupts
ret
init_buzzer:
cbi BUZZ_DIR, BUZZ_PIN
;
; Setup timer
ldi temp_r, (1<<COM0A0) | (1<<WGM01) ; Set CTC timer mode and toggle OC0A pin on Compare Match
out TCCR0A, temp_r
ldi temp_r, 14
out OCR0A, temp_r
ldi temp_r, (1<<CS01) ; Prescale on 8
out TCCR0B, temp_r
ret
init_ports: ; Init MCU ports
; Setup PORTA
ldi temp_r, 0x0f

48
firmware.hex
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@ -1,29 +1,31 @@
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